I have some S7-400 STL code that uses all 4 accumulators. I need to convert this to S7-300 2-accumulator STL code. For now, this is to be able to run the code correctly on PLC-SIM (When are we getting a simulator for S7-400?), but it would be useful for porting programs to S7-300 PLC's as well.

Is there a tool that can do this for me? At the moment, I am manually editing the code to simulate ACCU3 and ACCU4, but it is time-consuming, tedious and error prone.

K0ICHI

Is there a tool that can do this for me? 

Never heard of one. 

Thanks Fritz, that's a useful tool that I will keep in the toolbox.

I tried it, and it notifies me of all the ENT, PUSH and POP commands. That's nice, but I wish Siemens had taken it one step further and offered a function to actually change the code to simulate the extra accumulators.

fritz

 I wish 300's would actually have 4 accumulators too (but suppose beggars can't be choosers)

Most of 300's users have no idea that there are 2 as they hardly comprehend LAD. So it's already waste of silicon.